Niantic has done a good job at steadily adding new features and monsters to Pokémon GO over the months, and over two years after launch, it's right back at number one. They'll soon be updating the game once again, this time to add a Mythical Pokémon from the Johto Region. So when and how can you get your hands on the marvelous Celebi?

The guardian of Ilex Forest heads to the popular mobile app on Monday, August 20th. Celebi will be available to catch as part of the Special Research program, which means you'll have to perform a variety of tasks to unlock it first. Celebi is available to everyone on stage three (or beyond) of the Mew Special Research.